Riveting-machine



.(Nd Model. A, IRD

RIVETING MAGHINE. A

No 571,503. I Patented Nov. 17, 1896.

UNITED STATES PATENT OFFICE.

ARCHIE M. BAIRD, OF TOPEKA, KANSAS.

RlVETlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 571,503, dated November17, 1896.

Application filed March 1 7, 1 89 6.

To all whom it may concern,-

Beit known that I, AEcEIE M. BAIRD, a citizen of the United States,residing at Topeka, in the county of Shawnee and State of Kansas, haveinvented certain new and useful 11nprovements in Riveting-Machines, ofwhich the following is a specification.

The object of my invention is to provide a simple, efficient, andeconomical portable machine for heading rivets; and the inventionconsists in the features, combinations, and details of constructionhereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view of my machine,looking at it from the top; Fig. 2, a side elevation, partly in section,taken 011 the line 2 of Fig. 1.

In the art to which this invention relates it is well known thatboilers, water-tanks, and different parts of locomotive constructionhave heretofore been riveted together piece by piece and built up, as itwere, largely by manual labor, owing to the fact that no efficient andeconomical machine had been provided to meet the wants of this peculiarclass of structures.

My invention, therefore, is intended to be used particularly inconnection with boilers, water-tanks, &c., and to overcome theobjections and defects of the existing mechanisms by providing a simple,economical, and efficient machine having the greatest amount of powerfor the least amountof material and taking up the least amount of space,so that it is capable of being used in the construction of water'tankssuch as are used on the tenders of locomotives where the space foroperating is limited.

In constructing a machine in accordance with my improvements I provide abifurcated frame portion A, substantially C-shaped in contour and of thedesired strength to support the operating parts. To the free ends of thebifurcated frame, as at a, I pivot two vibrating actuating-levers B,which at their outer ends are provided with headers b, and which havetheir inner ends extending over and be yond the frame, so as to inclosebetween them the opera-tin g mechanism, To operate the Serial No.583,537. (No model.)

actuatinglevers as desired, I provide a fluidpressure cylinder 0, andsecure it to the heel of the frame portion. This cylinder is providedwith two reciprocating pistons c and 0, each provided with piston-rods cand 0 which extendout of the cylinder-heads to en gage the inner freeends of the actuating-levers. The inner free ends of the actuatingleversare preferably bifurcated, as at b, so as to span the flattened ends 0of the pistonrods. These flattened ends are perforated and provided withsplit keys a that serve to draw the inner ends of the actuating-leverinwardly and away from the work.

The fluid-pressure is admitted into this cylinder through the port 0between the piston, so as to operate to move the cylinders away fromeach other and bring the operating ends of the actuating-lever togetherto head a rivet. When the fluid-pressure is shut off and allowed toescape from the cylinder, the springs c act to return the cylinders totheir normal inner position and open the operating ends of theactuating-levers. I

By having the actuating levers pivoted to the free ends of thebifurcated frame and the fluid-pressure cylinder secured to the rear orheel portion of the frame and between the inner ends of the levers themechanism is made very compact and powerful with the least amount ofmaterial, so that it can be dropped by means of a falls and tackle-thehook D of which is shown in the figures as inserted in the eye on thecylinder-into' a tank or boiler, and the riveting operations beperformed economically and efficiently.

I claim-- A machine of the class described having combined a bifurcatedframe portion, two vibrating actuating-levers pivotally secured to thefree ends of the frame portion and provided with acting jaws at theirouter free ends and their inner free ends arranged to extend over andbeyond the frame portion, a fluidpressure cylinder secured to the heelof the bifurcated frame portion and between the actuating-levers, tworeciprocating pistons movably mounted in the cylinder portion and havingtheir piston-rods extending out of op posite ends of the cylinder so asto engage the levers to their inoperative position,substanactuating-levers and operate the same, said tially as described.

AROIIIE M. BAIRD.

lVitnesses GEORGE W. SMITH, THOMAS B. McGREGoR.

